2131 results about "Dimensional precision" patented technology

The invention relates to the field of numerical control machining, discloses a numerical control machining method and system integrating thermal expansion dynamic compensation, and aims to solve the problem that precision is out of control due to thermal deformation in high-speed cutting of motorcycle light alloy castings. The method comprises the steps that distributed temperature and displacement sensors are arranged in a key area of a workpiece, and a temperature field and thermal expansion amount are collected in real time; constructing a local thermal deformation prediction model based on a material expansion coefficient and a geometric structure, and correcting a tool path in real time through a coordinate system dynamic offset algorithm; and an on-line measurement feedback mechanism is introduced, and model parameters are adaptively optimized, so that closed-loop compensation is realized. The system comprises a sensing module, a thermal deformation modeling and compensation calculation module, a coordinate dynamic correction module, an online measurement feedback module and a parameter adaptive updating module. Through millisecond-level dynamic compensation and closed-loop self-optimization, the size precision and form and position stability of the complex thin-wall part under the high-temperature working condition are remarkably improved, the rejection rate and cooling energy consumption are reduced, and the method is suitable for a high-precision batch machining scene.

The invention discloses a machining error-oriented hardware part size compensation method and platform, and relates to the technical field of industrial control, in particular to the technical field of hardware part machining. The method comprises the steps that based on a to-be-machined part, structural basic characteristics are obtained, and a three-dimensional size compensation map is drawn up with the elasticity modulus of a material as a constraint; matching each tool path target compensation amount sequence based on the map, and synchronously predicting a size deviation value; introducing an environmental interference factor, and inputting the pre-training model to generate a dynamic correction coefficient; and on the basis of the data, cutter compensation, the feeding rate and the rotating speed are dynamically adjusted through a self-adaptive strategy till the machining error is stabilized within the tolerance range. The technical problem that in traditional hardware part machining, due to the fact that a static compensation strategy is difficult to adapt to a dynamic machining environment, the machining size precision is unstable is solved, and the technical effects that self-adaptive high-precision size compensation based on the real-time machining state and multi-source interference sensing is achieved, and the part machining consistency and the percent of pass are improved are achieved.

The invention discloses a power chuck machining device capable of compensating clamping and automatically pushing materials, and particularly relates to the field of chuck machining, the power chuck machining device comprises a chuck base, a plurality of clamping jaws are arranged on the chuck base, and the multiple clamping jaws clamp and fix a thin floating disc by synchronously and radially moving along the surface of the chuck base; a supporting piece is arranged on the chuck base and makes contact with the bottom of the thin floating disc. The supporting piece is arranged to support the thin floating disc, the supporting force of the thin floating disc is effectively increased, the possibility that the thin floating disc deforms due to external force in the turning process is reduced, higher rigidity is provided, vibration and bending of the thin floating disc can be effectively restrained, the stability in the machining process is improved, and the machining precision is ensured; and by arranging the adsorption mechanism, the action of force can be more uniformly distributed, vibration is reduced, the turning quality is improved, a smoother surface is obtained, and the size precision and the surface quality in the turning process are further ensured.

The invention discloses a positioning and clamping fixture for automobile frame welding, and relates to the technical field of automobile manufacturing equipment.The positioning and clamping fixture comprises a workbench, a welding angle adjusting mechanism is arranged at the top of the workbench, and a thermal deformation dynamic compensation positioning and clamping mechanism is arranged at the top of the welding angle adjusting mechanism; a PLC is installed on the top of the workbench. According to the positioning and clamping fixture for automobile frame welding, through the arrangement of the thermal deformation dynamic compensation positioning and clamping mechanism, position deviation caused by thermal deformation is corrected in real time, out-of-tolerance of the size precision of a frame welding part is avoided, subsequent correction processing links are reduced, the production cost is reduced, and the problems that an existing fixture adopts a fixed rigid clamping and positioning structure, and the machining efficiency is high are solved. The problems that position deviation caused by thermal deformation cannot be corrected in real time, the size precision of a frame welding part is out of tolerance, additional correction machining is needed in the follow-up assembling process, and the production cost is increased are solved.

A machining system for vertically milling a large-diameter inner hole comprises a cutter bar, a bolt type coupler, a sleeve type cutter tower and a special milling cutter. The machining method for vertically milling the large-diameter inner hole by using the machining system comprises the following steps of: clamping a blank; the axis of the special milling cutter is on the H surface; during machining, the special milling cutter moves in the radial direction of the H face, when special conditions are met, the special milling cutter clockwise deflects by a given angle theta around the axis of an inner hole of the workpiece to be machined, and then the special milling cutter horizontally moves by a distance ld along the diameter of the workpiece according to the given cutting depth ap; and the special milling cutter is axially fed towards the direction of the chuck, and the linkage of the axial movement of the special milling cutter and the rotation of the workpiece to be machined is realized. According to the special milling cutter, the angle deflection of the cutter can be flexibly realized, and the machined surface is easily protected; according to the machining method, milling machining is adopted, the chip shape is good, the tool durability is high, the size precision and shape precision are high, the machining efficiency is high, and the comprehensive technical effect is good.

The invention relates to the technical field of steel structure construction, in particular to a three-dimensional adjustable steel structure positioning and assembling support and an assembling method.The three-dimensional adjustable steel structure positioning and assembling support comprises a base, a side supporting jig frame and a lower supporting jig frame, and the side supporting jig frame comprises an adjusting base, a stand column, a transverse adjusting mechanism, a bracket, a side clamping plate and a longitudinal adjusting mechanism; the triangular pipe truss can be integrally pre-installed on the ground firstly according to actual needs, the aloft work amount is reduced, the construction safety and the construction efficiency are improved, and before the triangular pipe truss is assembled, the height and the width of the joints are changed through the adjusting mechanisms so that it can be guaranteed that the size and the shape of the triangular pipe truss meet the design requirements, and the triangular pipe truss can be repeatedly used; the production cost is reduced; the fine adjustment mechanism combines the characteristics of a lead screw adjusting mechanism and a wedge block adjusting mechanism, has good bearing capacity and adjusting precision, and is matched with the longitudinal adjusting mechanism, high adjusting precision is achieved, and the size precision requirement of production is met.

The invention relates to a method for manufacturing a server shielding cable in the technical field of information, which comprises the following steps of: after a cable structure is determined, manufacturing by adopting a precise extrusion and weaving process, strictly controlling the temperature in a range of 1150-2100 DEG C and the pressure parameter in a range of 0.5-1.5 MPa in the production process, and manufacturing the server shielding cable by adopting the precise extrusion and weaving process. The size precision and consistency of the cable are ensured, the manufacturing defects are found and eliminated in time by using the on-line detection and quality control technology, and the qualified rate and reliability of the cable are improved; after manufacturing is completed, cable wiring design is carried out, a three-dimensional wiring simulation technology is adopted, the wiring path and the bending radius of the cable in a narrow space are optimized, a pulley guide device and an elastic fixing clamp which can adjust tension are designed, stress concentration of the cable in the wiring process is reduced, the service life of the cable is prolonged, and according to the wiring design result, the cable is manufactured. And the overall structure of the cable is further optimized so as to meet the requirements of an actual wiring environment.

The invention discloses a technological method for forming an aluminum alloy shell through selective laser melting. The technological method comprises the steps that S1, model treatment is conducted; s2, supporting design; s3, carrying out analog simulation; s4, selective laser melting forming; s5, post-processing is carried out; s6, quality detection; according to the method, process simulation analysis is carried out on the additive manufacturing process risk, thermal-structure coupling field simulation calculation is carried out on a component, and deformation, temperature and stress distribution of all stages such as printing, substrate cutting and support removal are analyzed; time and economic cost can be saved, and the method can also be used for exploring process parameters and formulating an optimal process scheme; by means of the reversible deformation compensation technology, the printing problem is effectively reduced, the printing precision is improved, and when the part size precision requirement is high, the technology can assist printing and accurate forming; the method disclosed by the invention can be popularized and applied to other parts formed by selective laser melting, and has wide social benefits and economic benefits.

The invention relates to the technical field of metal plastic forming, and discloses a titanium alloy radial forging reduction rate collaborative optimization method based on material testing, which comprises the following steps of: acquiring dynamic characteristic data in a forging process in real time by acquiring multi-dimensional material performance parameters, and constructing a multi-target collaborative optimization model; and intelligent collaborative configuration of the reduction rate parameters is realized by adopting a self-adaptive weight distribution strategy. And a thermal coupling factor normalization equation and a phase field free energy functional normalization model are established, and the technical problems that in a traditional forging process, due to empirical configuration of reduction rate parameters, the structure is uneven, and residual stress exceeds the standard are solved. A lightweight model is deployed through edge computing nodes, millisecond-level dynamic correction of an optimization scheme is realized in combination with a 5G industrial private network, and the grain size qualification rate and the size precision of the titanium alloy forgings are improved. The method improves the yield of the grain size of the forge piece, ensures that the residual stress of the forge piece is reduced, stably controls the size precision, and improves the batch stability of high-end titanium alloy parts.

The invention relates to the technical field of forging, in particular to an air suspension aluminum cylinder assembly forging process which comprises the steps that a pre-forging blank is placed in a forging die and pre-forged, a forging face is divided into a plurality of annular areas, and point cloud data of a plurality of points in each annular area in the pre-forging process are obtained in real time; stopping pre-forging and pressing based on the change condition of the characteristic coordinate values, screening a raised characterization area, judging whether the shape change of the pre-forging blank is abnormal or not, forging the pre-forging blank with the abnormal shape change in a forging compensation manner to obtain a forging part, annealing the forging part to obtain an aluminum cylinder forging part, and further, performing pre-forging and pressing on the aluminum cylinder forging part to obtain the aluminum cylinder forging part. The forming shape stability of the special-shaped forged piece is analyzed according to the local deformation state of the material in the forging process, the forging mode is adaptively adjusted according to the material state difference, and the shape and size precision and the performance consistency of the special-shaped aluminum cylinder forged piece of the air suspension are improved.

The invention relates to the technical field of pipe bulging part positioning, and discloses a high positioning precision implementation process for a pipe bulging part, which mainly comprises the following steps: step 1, pipe manufacturing, step 2, pipe bending, step 3, preforming: performing preforming treatment on a metal pipe blank after pipe bending to ensure that the metal pipe blank meets the size and shape requirements before thermal expansion; 4, heating is conducted, specifically, the preformed pipe blank is heated to the high temperature of 900 DEG C or above; 5, thermal expansion is conducted, specifically, by means of air pressure or mechanical bulging, a punch is driven by an oil cylinder at the end of the part, local holes are punctured, bulging machining is conducted on the heated pipe blank, and the final shape of the pipe beam type part is obtained; and 6, cutting is conducted, specifically, the pipe beam subjected to thermal expansion is cut, waste materials at the holes and the ends are removed, a finished product meeting the requirement is obtained, during cutting, the puncturing holes in the step 5 serve as the positioning reference of the cutting brace, the part positioning precision is high, and the size precision of the cut part can be remarkably improved.

The invention provides a high-precision spinning forming process method for a ribbed cylinder section, and aims to solve the problems of diameter expansion, unevenness in deformation and the like in the traditional spinning process. The process comprises the following steps: performing double-sided turning on a prefabricated cylinder blank to ensure the inclination, mounting a spinning mold with a rib structure, heating the cylinder blank, and sleeving the heated cylinder blank on a mold with an inner cross groove to realize interference fit. And then, a three-spinning-roller spinning machine is started for spinning, the plasticity of the material is improved through induction heating, and the material flows into a cross groove of the mold. And after spinning is completed, the spinning roller is replaced with a turning tool, the outer surface is turned, and finally the part is taken out. According to the method, the inner diameter is controlled through material thermal expansion coefficient difference and diameter compensation, and boundary dimension homogenization is achieved through the induction heating and in-situ turning technology. The process is suitable for materials such as aluminum alloy and high-strength steel, the size precision of the cylinder section is remarkably improved, and technical support is provided for overall near-net forming of aircraft cylinder sections such as tactical projectiles. The spinning process is optimized, and the quality and performance of a final product are improved.

The invention relates to an elevation control and precise regulation and control method for frozen sand mold additive manufacturing in a time sequence space. According to the method, a mathematical model that the thickness of floating sand changes along with time due to moisture heat exchange of the frozen sand mold in air is established, and the thickness of the floating sand of frozen sand molds with different curved surfaces under the parameter conditions of different environment temperatures, time scales, sand mold materials, moisture contents and the like is predicted and fed back; and in the freezing printing process, real-time adhesive and height compensation is carried out on sand molds at different wall thicknesses, and the dimensional precision and geometric precision of the frozen sand molds are protected to a certain extent. According to the method, the problem of dimensional accuracy error caused by floating sand generated by heat exchange in air in the manufacturing and subsequent placing processes of the frozen sand mold is effectively solved, and the dimensional accuracy of the sand mold during casting is ensured.

The present application relates to the technical field of metal plastic forming, and discloses a titanium alloy radial forging reduction rate collaborative optimization method based on material testing, which acquires dynamic characteristic data of a forging process in real time through multi-dimensional material performance parameter collection, constructs a multi-objective collaborative optimization model, and realizes intelligent collaborative configuration of the reduction rate parameter by using an adaptive weight distribution strategy. A thermal coupling factor normalization equation and a phase field free energy functional normalization model are established to solve the technical problems of uneven structure and excessive residual stress caused by the empirical configuration of the reduction rate parameter in the traditional forging process. A lightweight model is deployed through an edge computing node, and millisecond-level dynamic correction of the optimization scheme is realized in combination with a 5G industrial private network, thereby improving the grain size qualification rate and size accuracy of titanium alloy forgings. The present application improves the grain size qualification rate of forgings, ensures stable control of the size accuracy while reducing the residual stress of forgings, and improves the batch stability of high-end titanium alloy components.

The invention discloses a stainless steel stator blade composite repairing method based on model reconstruction, which is characterized by comprising the following steps of: acquiring a blade profile section and parameters of a stainless steel stator blade; blade profile size data of a new blade are collected, and a point cloud model is established; acquiring an optimal point cloud model based on the data of the point cloud model, and establishing a blade reference grid model as a blade modification standard model; adopting UG software to reconstruct the blade modification standard model; detecting an old blade of which the blade profile contour is within the baseline deviation range of the reference model according to the reconstructed blade modification standard model for repairing; and blade corrosion pit repairing and chord length repairing are conducted on the old blade based on the blade modification standard model, and blade modification and X-ray detection are conducted after repairing is completed. According to the method, the size precision of the established blade modification standard model is within 0.02 mm; the repairing area can effectively avoid the problem of secondary corrosion, and the service life of the blade is prolonged.

The invention particularly relates to an aluminum profile straightening machining method with an aluminum bar as a raw material, and relates to the technical field of aluminum profile machining. Extruding and forming; determining a straightening scheme; and precision detection. According to the method, a whole-process quality control system is constructed from raw material pretreatment to post-treatment storage; the straightening scheme depends on characteristic parameterization to accurately adjust pressure, match pressure maintaining and release stress in a targeted mode, and the problem of stress concentration of the special-shaped section is solved. Precision detection covers multi-dimensional form and location tolerances and defects, and data are fully traced, so that support is provided for quality closed-loop management and control; surface protection and storage are standardized through post-treatment, and performance degradation is prevented; the whole process is coordinated, the straightness, the stress uniformity and the size precision of the aluminum profile are greatly improved, and the requirements of the high-end field for high-quality profiles are met.

The invention discloses a processing method of a spinneret plate, which comprises the following steps: acquiring a plate material, and pretreating the plate material to obtain a blank of the spinneret plate; the blank is installed on an automatic punching machine tool, punching is conducted on the same position of the blank for at least three times, modification treatment is conducted after punching of the blank is completed every time, and the spinneret plate is obtained. The invention further discloses the lyocell spinneret plate. According to the spinneret plate, the same position in the spinneret plate blank is subjected to multiple times of punching and other operations, spinneret orifices formed through multiple times of punching are low in roughness and higher in size precision, meanwhile, the strength of materials in the orifices is enhanced, and the problems that in spinning production, yarn breaking and doubling are likely to happen, adhesion is likely to happen, and the plate replacement cleaning difficulty is large can be solved.

The invention belongs to the technical field of mold machining, and discloses a mold sensor monitoring and data analysis system and method based on the Internet of Things, and the method comprises the steps that a data collection module collects mold data and injection molding part data; the data acquisition module acquires temperature, pressure and time data of the mold; the image acquisition module acquires plastic part and mold images; the image preprocessing module preprocesses the image; the feature extraction module performs feature extraction on the image; the image analysis module identifies abnormal conditions of the mold and the plastic part; the injection molding simulation module simulates an injection molding process; and the data fusion analysis module comprehensively judges the states of the mold and the plastic part. Mold cracks and plastic part deformation abnormity can be recognized, and batch waste products are avoided; the injection molding simulation module predicts a melt flow path and optimizes the sprue design and the cooling system layout; the influence of thermal expansion on size precision is simulated, and mold testing times are reduced; and the data fusion analysis module combines the image and the sensor data to improve the state judgment reliability.

The invention discloses a cut-off die for an air outlet taper pipe shell of an automobile engine exhaust system, and relates to the technical field of stamping machining of automobile parts, the cut-off die comprises a supporting unit, a connecting piece, an upper die unit, an upper die assembly arranged at the top of the connecting piece, and a stamping assembly arranged in the upper die assembly. Through the integrated operation of material conveying, punch forming, edge cutting-off and automatic discharging, the limitation that a traditional punching technology is multiple in working procedure and prone to errors is broken through, the production period is greatly shortened, the production efficiency is improved, the device can efficiently conduct batch production, the time for equipment shutdown adjustment is shortened, through cooperation of the punching assembly and the bearing assembly, the production efficiency is improved, and the production cost is reduced. And through precise control of the hydraulic cylinder, the workpiece wrinkling phenomenon is effectively avoided, and it is guaranteed that the surface of the punched conical pipe is smooth, and the size precision is high.

The frequency converter shell stamping device particularly relates to the technical field of frequency converter production and comprises a machine shell, a plurality of machine legs are fixedly connected to the lower end of the machine shell, a containing plate is fixedly connected to the inner surface of the machine shell, an upper die is fixedly installed at the lower end of a hydraulic cylinder, and a conveying and oil spraying assembly is arranged on the inner surface of the machine shell. A cooling supporting assembly is arranged on the inner surface of the lower mold and the inner surface of the upper mold. According to the frequency converter shell stamping device, by arranging the oil spraying mechanism, lubricating oil is sprayed to the upper die and the lower die, meanwhile, an aluminum alloy plate in the moving process can be sprayed, friction can be effectively reduced, abrasion between the dies and materials in the stamping process is reduced, the service life of the dies is prolonged, and meanwhile, the production efficiency is improved. And the lubricating oil can improve the stability in the stamping process, reduce the risks of material deformation, wrinkles and cracks, and ensure the surface quality and dimensional precision of the aluminum alloy plate.

The invention relates to a production line for continuous production of sofa iron stands, which comprises an upper wheel die holder, a lower wheel die holder is clamped at the bottom end of the upper wheel die holder, a driving shaft is fixedly connected to the inner ends of the upper wheel die holder and the lower wheel die holder, and a workpiece is arranged at the outer end of the upper wheel die holder in a contact manner. The top end of the bending arm is in sliding connection with a hydraulic sliding block, the top end of the hydraulic sliding block is in sliding connection with a servo sliding block, the resilience force of a bent workpiece can be monitored through the detection device, accurate bending compensation is conducted, the resilience phenomenon of the workpiece caused by material characteristics is effectively compensated, and the size precision of a finished product is improved; according to the bending compensation device, the product quality and consistency are guaranteed, the stress relieving assembly conducts induction heating on the bent portion of the workpiece during bending compensation, internal stress is eliminated, secondary springback is prevented, meanwhile, the possibility that the workpiece deforms in the follow-up use process is reduced, the durability and reliability of the product are enhanced, and the overall performance of the product is improved.

The invention discloses an injection molding device with an auxiliary mold micro-opening and glue sealing structure, and the device realizes accurate micro-opening of a movable mold plate through the synergistic effect of a mold opening and closing assembly and an auxiliary mold opening assembly, so that the micro-opening distance of the movable mold plate can be kept in a controllable range of 0.5 mm-2mm. Therefore, the uniformity of mold cavity exhaust and material flow distribution in the injection molding foaming process is effectively improved; in addition, the structure of the injection screw is optimized, and a spiral dispersing element area and a pin mixing area are sequentially arranged at the head of the injection screw, so that the gas-containing molten material can be efficiently dispersed and homogenized, and the micropore structure and the surface quality of the interior of a product are remarkably improved. Compared with the prior art, the consistency and the size precision of the product can be remarkably improved, the defective rate is reduced, and the mechanical property and the appearance quality of the foamed plastic product are improved.

The invention belongs to the technical field of powder metallurgy, and particularly relates to a high-precision injection-molded titanium alloy workpiece and a machine learning assisted preparation method thereof.The machine learning assisted preparation method of the high-precision injection-molded titanium alloy workpiece comprises the steps that an original data set is obtained through three-dimensional mold filling numerical simulation, performing data processing on data in the original data set to obtain an expanded data set; based on the expanded data set, multiple different machine learning algorithms are adopted to construct an injection molding process parameter prediction model, and an optimal prediction model is obtained; and optimal process parameters are obtained based on the model, and a target titanium alloy workpiece is prepared. According to the method provided by the invention, three-dimensional mold filling numerical simulation and machine learning are fused, and the process parameter prediction model is constructed and optimized, so that the actual MIM process is guided, the titanium alloy workpiece with high dimensional precision can be obtained, the research and development period is greatly shortened, and the trial-manufacturing cost is reduced.

The invention relates to the technical field of aero-engine part machining, in particular to a machining method for a ceramic matrix composite turbine outer ring. The method specifically comprises the following steps: polishing a blank; blank detection; cutting the silicon shell; trimming is conducted; bonding is conducted; milling is conducted; repairing and cleaning by pincers; and inspecting. According to the method, a bonding clamping mode is adopted, a traditional pressing plate and bolt pressing structure is omitted, the structure of a tool clamp is simplified, the operation complexity of the clamp is reduced, and large machining and tool cost is saved; after the blank benchmark of the part is determined, the part is directly machined to the final size at a time, benchmark conversion is not needed, machining errors caused by clamping and benchmark conversion are reduced, the size precision and stability are guaranteed, and meanwhile the production efficiency is improved.

The invention provides a manufacturing method of a compressor slip sheet, the compressor slip sheet is provided with a sliding surface in sliding connection with a compressor cylinder body and a hinge part for hinging a compressor piston, and the compressor slip sheet is used for realizing eccentric rotation of the compressor piston and a crankshaft and realizing air compression, and the manufacturing method comprises the following steps: preparing a slip sheet body; the thickness of the slip sheet body is 2.8 mm to 4.5 mm, and the slip sheet body is provided with a first plane used for machining a sliding surface and second planes located at the two axial ends of the hinge part; the first plane is ground; feeding from the first plane of the slip sheet body, carrying out at least one time of linear cutting according to the target track of the hinged part to obtain the hinged part, and enabling the diameter range of the hinged part to be 1.5 mm to 3.5 mm; the second plane is subjected to accurate grinding treatment; and inspecting the surface of the slip sheet body, processing edges, and cleaning to obtain the compressor slip sheet. The problems that the size precision of the hinged end of the sliding vane does not meet the requirement, high-speed and smooth rotation is difficult, and noise is easily generated due to vibration are solved.

The invention provides a hard springback processing system and method for precision stamping parts, and belongs to the technical field of precision stamping part manufacturing, and the system comprises a springback value detection module, a data processing module, a multi-field cooperative execution module and a closed loop feedback module. The springback value detection module collects springback value distribution data of the surface of the stamping part in a non-contact mode through a multispectral camera, and a visual numerical matrix is generated by combining color scale bar calibration. And the data processing module fuses finite element simulation and a machine learning model, and calculates the refined compensation amount of each region. The method comprises the steps of detecting springback value distribution after demolding, generating a compensation strategy, performing multi-field cooperative compensation and performing real-time feedback optimization. According to the invention, accurate identification and dynamic compensation of the micron-sized springback value are realized, the problems of low detection precision, single compensation mechanism and poor adaptability in the prior art are solved, elastic springback is effectively inhibited, the shape and size precision of a workpiece are improved, manual correction links are reduced, and the production efficiency and the product qualification rate are improved.

The invention relates to the technical field of unmanned helicopters, in particular to a carbon fiber reinforced rotor wing connecting piece numerical control lathe vibration suppression clamp which comprises a claw disc, a vibration suppression mechanism and an inner supporting mechanism. The clamping blocks make contact with the ends of the carbon fiber rotor wing connecting pieces. The vibration suppression mechanism comprises a clamping adjusting assembly penetrating through the top of the damping rod, the clamping adjusting assembly is in pressure communication with the pneumatic rail, the damping rod provides buffering and vibration suppression, and the inner supporting mechanism and the claw disc are coaxially fixed. The clamping pressure is adjusted in real time through the linkage design of the pneumatic track and the vibration suppression mechanism, the cutting force difference during asymmetric machining is effectively balanced and high-frequency vibration of a carbon fiber material is suppressed in combination with a multi-point supporting structure of the inner supporting mechanism, so that the dimensional precision and the surface quality of a workpiece are guaranteed, and the machining efficiency is improved. The device has the advantages of dynamically adjusting clamping pressure, balancing cutting stress, restraining high-frequency vibration and improving machining precision.

The invention discloses a surface roughness and size precision common prediction method based on a relative position matrix, and mainly relates to the field of roughness detection. Comprising the steps that in the turning machining process, vibration signals are collected in real time through multi-channel acceleration sensors arranged at the positions of a main shaft, a tool and a workpiece clamp, and a roughness measuring instrument and a micrometer are synchronously used for measuring the surface roughness value and size data of a machined workpiece; normalization processing is carried out on the collected vibration signals, the vibration signals are converted into two-dimensional images to be expressed based on a relative position matrix algorithm, deep features are extracted through two-dimensional discrete wavelet transform, and the spatial expression ability of the signals is enhanced. The method has the beneficial effects that the vibration signal is converted into the two-dimensional RPM graph through the RPM, and the 2D-DWT is utilized to perform decomposition reconstruction and image fusion, so that the deep sharing features in the vibration signal are effectively extracted, and the method plays a key role in improving the prediction precision of the surface roughness and the size precision.

The invention relates to the technical field of precision manufacturing and intelligent control, and particularly discloses an intelligent spark machine machining parameter optimization method based on effect feedback, which comprises the following steps of: calculating an abnormal characteristic value of an electrode feeding speed by using Haar wavelet transform, and analyzing time sequence data of conductivity of a working solution by using fast Fourier transform; according to the method, abnormal characteristic values are obtained, the characteristic values are constructed into a comprehensive characteristic vector, the comprehensive characteristic vector is input into a random forest model for comprehensive analysis, an electric spark machining effect score is generated, the system can dynamically adjust the electrode feeding speed and the working fluid conductivity based on the effect score, and it is ensured that machining parameters are always in the optimal configuration; according to the method, the machining efficiency is improved, the rejection rate is reduced, the surface quality and the size precision of the product are greatly improved, and the requirement of precision manufacturing is met.

The invention discloses a rolling treatment process for one-step forming of w-shaped hinge section steel, and particularly relates to the technical field of rolling treatment processes, which comprises the following steps: S1, heating; s2, descaling is carried out; s3, rolling is conducted; s4, cooling; s5, straightening; s6, saw cutting; and S7, quality inspection. According to the rolling treatment technology for one-time forming of the W-shaped hinge section steel, the efficient production process can be achieved, the procedures from heating, descaling, rolling to cooling are closely connected, the automation degree is high, the production period is greatly shortened, the production efficiency is improved, and the production cost is reduced. Meanwhile, strict quality control measures are taken in each key step, such as a computer temperature control and pulse combustion technology in a heating process, a high-pressure system and optimized parameters in a descaling process, precise equipment and precise control in a rolling stage, and a three-section laminar cooling process in a cooling link. Therefore, the dimensional accuracy and the cross section shape of the product are ensured.